LITTLE ROCK, Ark. (AP) - A vote on legislation that would require voters to show photo identification at the polls has been delayed over questions about procedure.

The Senate on Monday delayed a vote on the voter ID legislation after a Democratic lawmaker questioned whether the Senate had previously approved the measure with the proper amount of votes.

Similar concerns had come up in the House by Democrats who argued that the bill requires a two-thirds vote in the House and Senate. Opponents of the bill argue that a two-thirds majority is needed because the legislation would change voter requirements laid out in a constitutional amendment.

A House panel had rejected those concerns.

The Senate referred the matter to its rules committee - which plans to consider the objection on Tuesday.